8XC196LX SUPPLEMENT

Table 11-2. 87C196LA, LB OTPROM Address Map

Address Range

Description

(Hex)

 

 

 

7FFF

Program memory

2080

 

207F

Reserved (each location must contain FFH)

205E

 

205D

PTS vectors

2040

 

203F

Upper interrupt vectors

2030

 

202F

Security key

2020

 

201F

Reserved (each location must contain FFH)

201C

 

201B

Reserved (must contain 20H)

201A

CCB1

2019

Reserved (must contain 20H)

2018

CCB0

2017

OFD flag for QROM or MROM codes

2016

 

2015

Reserved (each location must contain FFH)

2014

 

2013

Lower interrupt vectors

2000

 

Intel manufacturing uses this location to determine whether to program the OFD bit. Customers with quick-ROM (QROM) or masked-ROM (MROM) codes who desire oscillator failure detection should equate this location to the value 0CDEH.

11.3SLAVE PROGRAMMING CIRCUIT AND ADDRESS MAP

Figure 11-1 shows the circuit diagram and Table 11-3 details the address map for slave program- ming of the 87C196LA and LB devices.

11-2

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Intel 8XC196Kx Slave Programming Circuit and Address MAP, C196LA, LB Otprom Address Map, Address Range Description Hex